Add debug widget/live activity export and competitor research

Debug features (DEBUG builds only):
- WidgetExporter: Export all widget variants to PNG (light/dark modes)
- Live Activity lock screen export with configurable streak
- Test notifications button to preview all personality packs
- Settings buttons for export and notification testing

Research:
- Competitor analysis docs (Daylio, Bearable, Reflectly, etc.)
- App Store screenshot reference materials

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Shared/LocalNotification.swift

@@ -128,4 +128,46 @@ class LocalNotification {
     public class func removeNotificaiton() {
         UNUserNotificationCenter.current().removeAllPendingNotificationRequests()
     }
+
+    // MARK: - Debug: Send All Personality Pack Notifications
+
+    #if DEBUG
+    /// Sends one notification from each personality pack, staggered over 10 seconds for screenshot
+    public class func sendAllPersonalityNotificationsForScreenshot() {
+        let _ = createNotificationCategory()
+
+        let packs: [(PersonalityPack, Double)] = [
+            (.Default, 5),
+            (.MotivationalCoach, 6),
+            (.ZenMaster, 7),
+            (.BestFriend, 8),
+            (.DataAnalyst, 9)
+        ]
+
+        for (pack, delay) in packs {
+            let content = UNMutableNotificationContent()
+            let strings = pack.randomPushNotificationStrings()
+            content.title = strings.title
+            content.body = strings.body
+            content.sound = .default
+            content.categoryIdentifier = LocalNotification.categoryName
+            content.interruptionLevel = .timeSensitive
+
+            let trigger = UNTimeIntervalNotificationTrigger(timeInterval: delay, repeats: false)
+            let request = UNNotificationRequest(
+                identifier: "debug-\(pack.rawValue)-\(UUID().uuidString)",
+                content: content,
+                trigger: trigger
+            )
+
+            UNUserNotificationCenter.current().add(request) { error in
+                if let error = error {
+                    print("Failed to schedule \(pack) notification: \(error)")
+                } else {
+                    print("Scheduled \(pack) notification in \(delay)s")
+                }
+            }
+        }
+    }
+    #endif
 }